首页> 外文会议>2010 International Forum on Biomedical Textile Materials(2010国际纺织生物医用论坛) >Fabrication Tissue Engineering Heart Valve Leaflet Scaffold Using Complex Electrospinning Method
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Fabrication Tissue Engineering Heart Valve Leaflet Scaffold Using Complex Electrospinning Method

机译:复杂静电纺丝法制备组织工程心脏瓣膜小叶支架

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Collagen functionalized thermoplastic polyurethane nanofibers (TPU/collagen) were successfully produced by coaxial electrospinning technique with a goal to develop biomedical tissue engineering heart valve leaflet scaffold. A series of tests were conducted to characterize the compound nanofiber and its membrane in this study. Surface morphology and interior structure of the ultrafine fibers were characterized by scanning electron microscopy and transmission electron microscopy, whereas the fiber diameter distribution was also measured. Porosities of different kinds of electrospun mats were determined. The surface chemistry and chemical composition of collagen/TPU coaxial nanofibrous membranes were verified by X-ray photoelectron spectroscopy and Fourier transform infrared spectrometry. Mechanical measurements were carried out by applying tensile test loads to samples which were prepared from electrospun ultra fine nonwoven fiber mats. The results demonstrated that coaxialelectrospun composite nanofibers has the characters of native extracellular matrix and may be used effectively as an alternative material for tissue engineering heart valve leaflet scaffold and functional biomaterials.
机译:胶原蛋白功能化的热塑性聚氨酯纳米纤维(TPU /胶原蛋白)是通过同轴静电纺丝技术成功生产的,目的是开发生物医学组织工程心脏瓣膜小叶支架。在这项研究中,进行了一系列测试以表征复合纳米纤维及其膜。通过扫描电子显微镜和透射电子显微镜表征了超细纤维的表面形态和内部结构,同时还测量了纤维直径分布。确定了不同种类的电纺垫的孔隙率。用X射线光电子能谱和傅立叶变换红外光谱法对胶原/ TPU同轴纳米纤维膜的表面化学组成进行了验证。通过对由电纺超细非织造纤维毡制备的样品施加拉伸试验载荷进行机械测量。结果表明,同轴电纺复合纳米纤维具有天然的细胞外基质特性,可以有效地用作组织工程心脏瓣膜小叶支架和功能性生物材料的替代材料。

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